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Finding the Fourth Proportional to 31,904.94, 47,864.33 and 9,717.74

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Solution

The fourth proportional to 31,904.94, 47,864.33 and 9,717.74 is: 14,578.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,904.94 : 47,864.33 = 9,717.74 : x
  2. Step 2: Convert to fraction form
    31,904.94/47,864.33 = 9,717.74/x
  3. Step 3: Cross multiply
    31,904.94x = 47,864.33 × 9,717.74
  4. Step 4: Simplify right side
    31,904.94x = 465,133,114.21
  5. Step 5: Solve for x
    x = 465,133,114.21/31,904.94
  6. Step 6: Final answer
    x = 14,578.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.